134431645 has 8 divisors (see below), whose sum is σ = 161381304. Its totient is φ = 107503104.

The previous prime is 134431643. The next prime is 134431651. The reversal of 134431645 is 546134431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53377636 + 81054009 = 7306^2 + 9003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134431645 - 2¹ = 134431643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134431643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18357 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (20172663).

Almost surely, 2^134431645 is an apocalyptic number.

It is an amenable number.

134431645 is a deficient number, since it is larger than the sum of its proper divisors (26949659).

134431645 is an equidigital number, since it uses as much as digits as its factorization.

134431645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559.

The product of its digits is 17280, while the sum is 31.

The square root of 134431645 is about 11594.4661369120. The cubic root of 134431645 is about 512.2718651493.

The spelling of 134431645 in words is "one hundred thirty-four million, four hundred thirty-one thousand, six hundred forty-five".